#ifdef __USER_BLE_CONN__
#ifndef __BLE_HELPER_H__
#define __BLE_HELPER_H__
#include <BLEDevice.h>
#include <BLEUtils.h>
#include <BLEServer.h>
typedef void (*ble_write_callback_t)(std::string data);

void init_ble(ble_write_callback_t cb);
#endif
#endif